RECON: TNO occultation with 456826

Event between (456826) 07TH422 and star UC4-522-011492 with event index number of 104261

Geocentric closest approach at 2018/01/24 07:26:41 UTC

J2000 position of star is 05:15:29.9 +14:20:49
Equinox of date position of star is 05:16:31.0 +14:21:57
Stellar brightness R=16.5, use SENSEUP=128
Star is 52 degrees from the moon. Moon is 43% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 29.3 AU from the Sun and 28.6 AU from the Earth.
The TNO is moving 17.2 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 276 seconds.
The 1-sigma cross-track error in the shadow position is 3173 km.
The sky-plane scale is 20718.9 km/arcsec.

The TNO has an absolute magnitude Hv=7.7
Diameter=173.8 km assuming a 5% albedo -- 10.1 sec chord
Diameter=70.9 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 456826, (2018/01/24 07:27UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.6 +16:32:39  0.8  9.78  43
Bellatrix      05:26:06.0 +06:21:53  1.6  8.34  55
15 Ori         05:10:44.1 +15:37:07  5.2  1.88  51
PPM 120759     05:16:11.0 +15:04:54  7.2  0.72  52
PPM 120776     05:17:31.9 +14:09:56  9.3  0.32  53
PPM 120763     05:16:38.4 +14:19:16 10.5  0.05  52
456826         05:16:31.5 +14:21:58 16.5        53
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 3.3 sigma about the mid-time.
The median site spacing is 16.3 km RECON observability=1.0 and success probability=4.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:25:21 -58.9 Dark Up 44.2 233.7 Up 07:10:21 - 07:40:21 6764
Tonasket 07:25:20 -59.2 Dark Up 44.4 233.9 Up 07:10:20 - 07:40:20 6748
Okanogan 07:25:19 -59.4 Dark Up 44.7 234.0 Up 07:10:19 - 07:40:19 6720
Brewster 07:25:18 -59.6 Dark Up 44.9 234.0 Up 07:10:18 - 07:40:18 6695
Manson/Chelan 07:25:19 -59.7 Dark Up 45.3 233.8 Up 07:10:19 - 07:40:19 6670
Entiat 07:25:18 -59.9 Dark Up 45.4 233.9 Up 07:10:18 - 07:40:18 6652
Wenatchee 07:25:18 -60.1 Dark Up 45.6 233.9 Up 07:10:18 - 07:40:18 6631
Ellensburg 07:25:17 -60.4 Dark Up 46.0 234.0 Up 07:10:17 - 07:40:17 6595
Pasco 07:25:08 -61.5 Dark Up 45.6 236.2 Up 07:10:08 - 07:40:08 6579
PNWRO 07:25:07 -61.8 Dark Up 45.7 236.7 Up 07:10:07 - 07:40:07 6567
Yakima 07:25:15 -60.8 Dark Up 46.3 234.3 Up 07:10:15 - 07:40:15 6564
Toppenish/White Swan 07:25:13 -61.1 Dark Up 46.3 234.7 Up 07:10:13 - 07:40:13 6552
George/Umatilla 07:25:07 -61.8 Dark Up 46.0 236.3 Up 07:10:07 - 07:40:07 6548
Niwot 07:23:59 -68.9 Dark Down 39.1 254.5 Up 07:08:59 - 07:38:59 6529
Goldendale 07:25:13 -61.4 Dark Up 46.8 234.7 Up 07:10:13 - 07:40:13 6499
The Dalles 07:25:13 -61.5 Dark Up 47.2 234.5 Up 07:10:13 - 07:40:13 6472
Maupin 07:25:11 -61.9 Dark Up 47.4 235.0 Up 07:10:11 - 07:40:11 6443
Madras/Culver 07:25:08 -62.4 Dark Up 47.7 235.4 Up 07:10:08 - 07:40:08 6400
Redmond 07:25:07 -62.7 Dark Up 48.0 235.7 Up 07:10:07 - 07:40:07 6371
Sisters 07:25:10 -62.6 Dark Up 48.2 235.2 Up 07:10:10 - 07:40:10 6361
Bend 07:25:07 -62.8 Dark Up 48.2 235.7 Up 07:10:07 - 07:40:07 6350
Oregon Observatory 07:25:07 -63.0 Dark Up 48.3 235.7 Up 07:10:07 - 07:40:07 6333
La Pine/Gilchrist 07:25:05 -63.1 Dark Up 48.5 235.8 Up 07:10:05 - 07:40:05 6315
North Lake 07:25:02 -63.7 Dark Up 48.4 236.9 Up 07:10:02 - 07:40:02 6298
Paisley 07:24:59 -64.3 Dark Up 48.5 237.8 Up 07:09:59 - 07:39:59 6265
Lakeview 07:24:57 -64.8 Dark Up 48.6 238.5 Up 07:09:57 - 07:39:57 6231
Chiloquin 07:25:04 -64.0 Dark Up 49.3 236.5 Up 07:10:04 - 07:40:04 6217
Klamath Falls 07:25:02 -64.3 Dark Up 49.5 236.9 Up 07:10:02 - 07:40:02 6192
Cedarville 07:24:53 -65.5 Dark Up 48.8 239.3 Up 07:09:53 - 07:39:53 6184
Tulelake 07:25:00 -64.6 Dark Up 49.4 237.5 Up 07:10:00 - 07:40:00 6179
Fall River/Burney 07:24:56 -65.4 Dark Up 49.9 238.4 Up 07:09:56 - 07:39:56 6108
Susanville 07:24:51 -66.2 Dark Up 49.7 239.9 Up 07:09:51 - 07:39:51 6079
Gimple 07:24:51 -66.4 Dark Up 50.0 239.9 Up 07:09:51 - 07:39:51 6050
Greenville 07:24:50 -66.4 Dark Up 50.1 239.8 Up 07:09:50 - 07:39:50 6047
Portola 07:24:48 -66.8 Dark Up 49.9 240.7 Up 07:09:48 - 07:39:48 6035
Reno 07:24:45 -67.3 Dark Up 49.6 241.7 Up 07:09:45 - 07:39:45 6033
Quincy 07:24:50 -66.5 Dark Up 50.2 240.1 Up 07:09:50 - 07:39:50 6031
Yerington 07:24:40 -68.0 Dark Up 49.4 242.9 Up 07:09:40 - 07:39:40 6008
Carson City 07:24:43 -67.6 Dark Up 49.8 242.1 Up 07:09:43 - 07:39:43 6004
Tonopah 07:24:29 -69.5 Dark Up 48.5 245.8 Up 07:09:29 - 07:39:29 5992
Hawthorne 07:24:35 -68.6 Dark Up 49.3 243.9 Up 07:09:35 - 07:39:35 5986
Gardnerville 07:24:41 -67.9 Dark Up 49.9 242.4 Up 07:09:41 - 07:39:41 5985
Lee Vining 07:24:36 -68.9 Dark Up 49.9 244.0 Up 07:09:36 - 07:39:36 5923
Indian Springs 07:24:17 -71.4 Dark Up 48.0 248.8 Up 07:09:17 - 07:39:17 5917
Beatty 07:24:23 -70.7 Dark Up 48.6 247.4 Up 07:09:23 - 07:39:23 5910
Bishop 07:24:30 -69.7 Dark Up 49.6 245.4 Up 07:09:30 - 07:39:30 5896
Henderson 07:24:13 -72.1 Dark Up 47.7 249.9 Up 07:09:13 - 07:39:13 5895
Patrick 07:24:07 -73.0 Dark Down 47.0 251.5 Up 07:09:07 - 07:39:07 5878
DCO 07:24:03 -73.4 Dark Down 46.6 252.4 Up 07:09:03 - 07:39:03 5876
Kingman/Dolan Springs 07:24:06 -73.1 Dark Down 47.2 251.6 Up 07:09:06 - 07:39:06 5853
Searchlight/Boulder City 07:24:10 -72.6 Dark Up 47.8 250.6 Up 07:09:10 - 07:39:10 5848
Lone Pine 07:24:27 -70.5 Dark Up 49.7 246.5 Up 07:09:27 - 07:39:27 5842
Laughlin/Bullhead City 07:24:09 -73.0 Dark Up 47.6 251.2 Up 07:09:09 - 07:39:09 5834
Mohave Valley 07:24:07 -73.3 Dark Up 47.7 251.4 Up 07:09:07 - 07:39:07 5811
Lake Havasu City 07:24:06 -73.7 Dark Down 47.7 252.1 Up 07:09:06 - 07:39:06 5785
Parker 07:24:04 -74.0 Dark Down 47.8 252.5 Up 07:09:04 - 07:39:04 5756
Blythe 07:24:02 -74.4 Dark Up 48.2 252.8 Up 07:09:02 - 07:39:02 5701
CPSLO 07:24:32 -70.5 Dark Up 52.1 245.4 Up 07:09:32 - 07:39:32 5647
Idyllwild 07:24:11 -73.5 Dark Up 49.8 250.9 Up 07:09:11 - 07:39:11 5640
Calipatria 07:24:04 -74.5 Dark Up 49.0 252.5 Up 07:09:04 - 07:39:04 5627
Yuma 07:23:59 -75.3 Dark Up 48.5 253.7 Up 07:08:59 - 07:38:59 5619
Wildwood 07:24:20 -72.4 Dark Up 51.1 248.8 Up 07:09:20 - 07:39:20 5609

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 456826, (2018/01/24 07:27UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.78  43
Bellatrix      05:25:07.8 +06:20:58  1.6  8.34  55
15 Ori         05:09:42.0 +15:35:49  5.2  1.88  51
PPM 120759     05:15:09.0 +15:03:44  7.2  0.72  52
PPM 120776     05:16:30.3 +14:08:48  9.3  0.32  53
PPM 120763     05:15:36.8 +14:18:07 10.5  0.05  52
456826         05:15:29.9 +14:20:49 16.5        52
Positions are for J2000

Event circumstances last updated at 2017/12/02 17:12:38 UT

Marc W. Buie, Southwest Research Institute

RECON